Improved build_rpm.sh

[ssbarnea]

• assure we use bash strict mode to avoid missing errors
• added untracked artifacts to gitignore

[openshift-ci-robot]

Hi @ssbarnea. Thanks for your PR.

I'm waiting for a containers member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[giuseppe]

/ok-to-test

[giuseppe]

LGTM

[mheon]

@ssbarnea You need to add a signoff to your commit - git commit --amend -s and re-pushing should do it.

[mheon]

/approve

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mheon, ssbarnea

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[rhatdan]

Thanks @ssbarnea
/lgtm